The idea is simple. People who are using drugs alone can download the app and be connected to a Cranstoun volunteer, with whom they can build a rescue plan in the event of an emergency. The plan is only activated if the app user overdoses. It will send an emergency message to them, triggering the appropriate medical attention. This app is therefore all about preventing avoidable, fatal overdose.

The app provides support and harm reduction advice at the time when individuals are using drugs. For example, safer injecting and overdose prevention advice can be provided and if someone asks for help to access drug treatment services in their area, Cranstoun can provide this information.

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